In case of Star Vikings Forever
– the game:
a) supports Linux according to the game page
b) does not support Linux according to search results
Check the screenshot attached.
Strictly speaking, according to the game page, it does not
support Linux. See "Works on: Windows (XP, Vista, 7, 8, 10)" --- no mention of Linux.
It does have Linux system requirements, though, because it does indeed (probably) work on Linux. The bug is (probably) in the wrong "Works on", which is what is also used for the search results.
BTW, the game also works on Mac, but this is neither mentioned in the "Works On", nor in the "System Requirements".
These kinds of bugs (wrong game page information) are hardly worth mentioning; there are so many of those that it's impossible to keep track.
P.S. GOG has default values for many of its fields (e.g. "TEST DEVELOPER" for the developer field) and every so often, for reasons unknown, a field reverts to the default and stays there for months or years, until someone (other than MaGog and me) notices it. The default for the "Works on" field was until recently "Windows (XP, Vista, 7, 8, 10)", hence the bug. I believe now it is "Windows (7, 8, 10)", as these have been popping up in more recent bugs.